Collapse

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collapse

[kə′laps]
(engineering)
Contraction of plastic container walls during cooling; produces permanent indentation.
(materials)
The flattening of cells in heartwood during drying or pressure treatment; often characterized by a caved-in or corrugated surface appearance.

Collapse

 

acute vascular insufficiency accompanied by a fall in arterial and venous blood pressure.

Collapse is a result of a disturbance of the regulation of vascular tonus and injury to the vascular walls through infection, intoxication, massive blood loss, severe dehydration, myocardial affection (acute myocardial infarction), and other pathological conditions. Collapse is characterized by a decrease of blood flow to the heart, a deterioration of the blood supply to the vital organs, and the development of hypoxia. The patient’s facial features become pinched and the eyes roll back. He becomes pallid, with sticky perspiration and cold extremities. If the patient is conscious, he lies immobile and indifferent to his surroundings. Breathing is superficial and accelerated. The pulse is rapid. The most accurate index of the gravity of the patient’s condition is the degree to which arterial pressure is lowered. Severe collapse may be a direct cause of death. Collapse is treated with the immediate use of agents that stimulate the vascular and respiratory centers and with vasoconstrictors, blood transfusions, and blood substitutes. Measures should also be directed toward the elimination of the primary causes of the collapse.

collapse

Mechanical failure of cells in wood, usually caused by abnormal or forced drying.
References in periodicals archive ?
Treatment of such cases should be managed with critical care support, and it should be remembered that rapid infusion of suramin may precipitate circulatory collapse.
Illness was characterized by extensive local inflammation at a subcutaneous or intramuscular injection site often followed by hypotension and circulatory collapse.
He said that fluid loss could lead to circulatory collapse and that the next few days would be critical.
Their symptoms include wheezing, vomiting, diarrhea, unconsciousness, or complete circulatory collapse.
Large doses of vitamin B1 may cause peripheral circulatory collapse.
Hospitalized patients most likely to benefit from CPR were those with sudden, unexpected circulatory collapse or abrupt respiratory insufficiency in the setting of acute cardiovascular illness[3, 5, 7, 18, 21].
Acute blood loss (hemorrhage) and subsequent circulatory collapse (shock) account for about half of all battlefield deaths, and the percentage has remained relatively unchanged since World War I.
Amphetamine causes irregular heartbeat, confusion, urine retention and painful urination, hyperthermia, hyperreflexia, muscle pain, severe agitation, rapid breathing and tremor, the FDA said, adding that a "large overdose may produce symptoms such as psychosis, anuria, cardiogenic shock, cerebral hemorrhage, circulatory collapse, extreme fever, pulmonary hypertension, renal failure, rapid muscle breakdown, serotonin syndrome, and stereotypy.
Large overdose, however, may produce symptoms such as psychosis, anuria, cardiogenic shock, cerebral hemorrhage, circulatory collapse, extreme fever, pulmonary hypertension, renal failure, rapid muscle breakdown, serotonin syndrome, and stereotypy, the FDA said.

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